Cylinder Constraint

I have a large cicular hole with a small circular cylinder inside. I want to constrain the cylinder to the hole in a way that makes the curve of the cylinder contact the top of the hole. Now here is the catch, I then will rotate the part with the hole. I need the cylinder to remain contacting the top of the hole.

Re: Cylinder Constraint

Tangent mates are difficult, at best. They have far too many solutions: every 90 degrees the math changes (sin or cos) and you can always have + or - solutions (inside faces or outside faces). I'm not surprised that you're having continuity problems with a tangent mate at the 90deg positions.